Merge remote-tracking branch 'origin/maint'

Tao: Replace 0 -> NULL for pointers

Single petscdir.mk

Typos

TAOPDIPM: Add primal-dual interior point method solver in TAO

docs: fix sowing list syntax/incomplete man page

Provide support for not setting PETSC_DIR when gnumake is being used; this will prevent some petsc-maint/petsc-users email threads

Commit-type: error-checking, testing-fix, feature, example
Thanks-t

Provide support for not setting PETSC_DIR when gnumake is being used; this will prevent some petsc-maint/petsc-users email threads

Commit-type: error-checking, testing-fix, feature, example
Thanks-to: Jed Brown <jed@jedbrown.org>
Thanks-to: Lisandro Dalcin <dalcinl@gmail.com>

show more ...

Promote examples/{tests,tutorials}/ to {tests,tutorials}/

This shortens paths and improves consistency between test target names
and paths to the source and output files. Most of the work was
compl

Promote examples/{tests,tutorials}/ to {tests,tutorials}/

This shortens paths and improves consistency between test target names
and paths to the source and output files. Most of the work was
completed by this script, followed by mild cleanup of nonconforming
cases.

for makefile in `git ls-files 'src/*makefile'`; do
if rg -q 'DIRS.*\bexamples\b' $makefile; then
base=$(dirname $makefile)
dirs=$(cd $base/examples && ls -d tests tutorials 2>/dev/null | xargs echo)
perl -pi -e "s#^(DIRS.*)\bexamples\b#\1${dirs}#" $makefile
git rm $base/examples/makefile
for t in $dirs; do
git mv $base/examples/$t $base/
perl -pi -e "s#^(LOCDIR[[:space:]]*=).*#\1 $base/$t/#" $base/$t
done
fi
done

git grep -l -E -z 'examples/(tutorials|tests)' | xargs -0 perl -pi -e 's#examples/(tutorials|tests)#\1#g'
git checkout @ \
src/docs/website/documentation/changes/ \
src/benchmarks/results/

show more ...